Canopy for lighting fixtures



' June '3, 1930; R.w. SCHWEIKER 1,761,090

CANOPY FOR LIGHTING FIXTURES Filed Feb. 21, 1929 2 Sheets-Shet 1 June 3, 1930. R. w. SCHWEIKER 1,761,090

CANOPY FOR LIGHTING FIXTURES Filed Feb. 21, 1929 2 Sheets-Sheet 2 purpose of preventing short circuits on the terminals and what would otherwise be eX- posed parts of the lamp socket.

The addition of this housing or protective shell makes the lamp socket more expensive and as many of the fixtures of this general type are highly competitive, it is desirable to minimize expense of manufacture.

In" carrying out the invention in the embodiment shown in Figs. 1 to 3, the canopy 1 is provided with a chamber or concavity 5 located inside the canopy and formed by thickening or" elongating the integral neck of the canopy in its central part as at 6 in the general direction of the longitudinal axis of the canopy. The chamber or concavity is l provided with 'a bottom or seat 7 and there is .an annular shoulder 8 pierced by, an opening 9which accommodates the screw threadled shell 1( of the lamp socket.

r, The lamp socket comprises the shell 10 and 1 ,a body or'base 11 of porcelain or insulating material, said shell being connected by screws 13 whose heads are shown exposed in Fig. 1 but whichare, in practice, covered with a sealing material, as is the common practice in sockets, The terminal screws for the socket appear at 14, said screws being connected to the metallic pieces which constitute terminals of the socket. There is a transverse groove 15 in the insulating body 11 forthe addition'of the wires which are to be fastened to the terminal screws 14.

U The insulating .body 11 has wings or lugs 16 and the concavity 5 is provided with ,grooves 17adapted to receive said wings or lugs, the purpose being to prevent the body 11 and the shell 10 carried thereby, from turning within the concavity 5 and the opening 8.

wholly contained within the concavity 5 and- The'entire body 11 with. its. fittings is surrounded and housed-thereby and has its @upper surface preferably at the level of, or ;below,[the upper end of the neck 6 so that the body will'be properly protected.

The lamp socket is held in position by a porcelain or insulating nut 18 which is internal- -ly screw threaded and is screwed onto the screw threadedcshell 10. The shade holding part 19 of the canopy which is integral with the central part 6' and upperpart of said canopyfiares outwardly below said central part is countersunk at 20 for the reception of.

the nut 18, the head of the nut overlapping the bottom of said shade holder and there being provided, by preference, a suitable non-rattling, joint, holds the insulating body 11 .drawn against the bottom of the concavity 5, and otherwise provides ascrew connection which can be readilyloosened when desired.

The housing 6 which has the concavity 5 may also be provided in the same canopy having the channels 17, with an enlarged offset 22'from which leads a perforation through the neck 6, the purpose being to adapt the canopy for the use therewith of a lamp socket of the, type having a switch if such be desired, as disclosed in Figs. 4 and 5. The canopy being provided with channels or notches 17 and the offset cavity .22, the fixture may be used either as one controlled by a wall switch or one having its own switch. According to'whether the lamp socket has, or has not a switch, the form of the body 11 will be changed.

. In Figs. 4 and 5, there is shown an embodiment of the invention wherein the lam socket is provided with a switch of the pull chain type and, to show the possibility of modification of the canop without changing the essential principle of the invention, I have shown in Figs. 4 and 5 a canopy of the shadeless type. a

The canopy 1 is provided with the attaching strap 2 which is secured by screws 3 and may be seated as at 4. The canopy has a cavity or chamber 5 in its neck 6, said cavity being of a depth suitable to accommodate or house the lamp-socket insulating-body 23.

Suitably connected to the body 23 is a screw threaded metallic shell24 which receives the lamp. The shell 24 projects through an opening 9 in the canopy, the shoulder 8 being provided as in Figs. 1 and2.

There is an outer shadelike porcelain finishing piece 25 which serves the urpose of of breakage and to do away with looseness.

' The walls of the cavit 5 are provided with channels 17 and an 0 set cavity 22 such as previously described. The terminals of the socket appear at 14:, the body 26 of the socket being provided with grooves 27in its side for the accommodation of the wires 28. As with the construction in Figs. 1 and 2,

.so in the construction in Figs. 4 and 5, the

terminals are housed and protected by the :walls of the cavity 5 against accidental contact. i

The socket being provided with the bell or mouth 28 through which the pull chain 29 passes, this bell or mouth is received within the supplemental cavity 22, rendering it unnecessary to provide on the body 26 the lugs or wings 16 used on the socket shown in Figs. 1 and 2, that is, the part 28 prevents the lamp socketfrom turning in the cavit 5, but it will be observed'that as the channe s 17 are provided in this form of fixture, the fixture of Figs. 4 and 5, like the fixture of 1 and. 2, is adapted to accommodate the socketsuch as shown in Figs. 1 and 2, as well as the one which is illustrated in Figs. 4, 5.

In both forms of the invention and in any I modification thereof, the canopy is provided with an internal cavity formed in the neck of the canopy itself, adapted to house, surround, and protect that part of the lamp socket which carries the terminals, thus doi ing away with the usual protective shell carried by lamp sockets and eliminating the expense thereof. V I

What I claim is: y 1. A canopy for a lighting fixture, embodying a body of insulating material having an enlarged hollow back or rear part, an

enlarged front or outer part, a constricted central part located between the aforesaid rear and outer part, said central partbeing provided with an internal chamber or cavity having a recess in one of its walls and disposed outwardly' in relation to the enlarged hollow back part aforesaid, and having a ring-shaped bottom, in combination with a lamp socket having an insulating base received within, and housed by, said chamber or cavity and provided with a projectingpart received in said recess, and a screw threaded metallic shell carried by said body, said shell projecting through the ring-shaped bottom into the enlarged outer part aforesaid.

2. A canopy for a lighting fixture, embodying a body of insulating material having an enlarged hollow back or rear part, an 1 enlarged front or outer part, a constricted central part located between the aforesaid rear and outer part, said central part being provided with an internal chamber or cavity having a recess in one of its walls and disposed outwardly in relation to the'enlarged i hollow back part aforesaid, and having a ring-shaped bottom, in combination with a lamp socket having an insulatin base received within, and housed by, sai or cavity and provided with a pull-chain-bell received in said recess, and a screw threaded metallic shell carried by said body, said she'll projecting through the ring-shaped bottom into the enlarged outer part aforesaid.

In testimony whereof I aflix my signature.

ROY W. SCHWEIKER.

chamber, 

